Fire-box.



BATBNTED JULY 2, 1907.

G; P. NoLTP..

- PIRE B0X. APPLIUATION-PILBD NOV. 5, A1906.

INVENTOR.

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BY Z? ATTORNEY.

Tn: 'Nantais PE1-:Rs co., w/xsumcran, n. c.

GEORGE F. NOLTE, OF EVANSVILLE, INDIANA.

FIRE-BOX.

Specification of Letters Patent.

Patented July 2, 1907.

Application filed November 5, 1906. Serial No. 342.054.

To all whom it may concern:

Be it known that I, GEORGE F. NOLTE, a citizen of the United States,residing at Evansville, in the county of Vanderburgh and State ofIndiana, have invented certain new and useful Improvements inFire-Boxes, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart hereof.

My invention has relation to improvements in fireboxes; and it consists-in the novel construction of box more fully set forth in thespecification andI pointed out in the claims.

In the drawings, Figure 1 is a transverse vertical section on line 1-1of Fig. 2 of a range showing my inven` tion applied thereto; Fig. 2 is avertical section at right angles to Fig. 1 on the broken line 2 2 ofsaid Fig. 1; Fig, 3 is an enlarged vertical middle section taken on theline 3*-3 of Fig. 4 through one of the perforated nipples which suppliesair to the fuel; and Fig. 4 is an end elevation of Fig. 3, with fuelremoved.

The present invention is an improvement on one of the structuralfeatures of the fire-box forming the subject matter of my pendingapplication for improvement in ranges, Serial Number 315,385, filed May5, 1906, and has for its object to` provide the walls of the fire-boxwith a series of perforated 'nipples for supplying jets of air to thefuel, and yet prevent the fuel from banking up against and stopping upthe discharge ends of the nipples, all as will better appear fromiadetailed description of the invention which is as follows:

Referring to the drawings which shows the specific application of theinvention to a range, (though it is to be understood that I am notlimited thereto as it may be applied to fire-boxes generally) R,represents a range and B the walls of the fire-box, and G, the grate.The walls of the Ere-box are spaced a suitable distance from thecorresponding walls of the range forming air chambers C from which airmay be fed to the fuel through the perforated bossesor nipple n formedon the inner faces of the tire-box walls, and distributed to the bestadvantage as determined by experience. The nipples are conical information and, with the wall of which they form a part are jointlyperforated by an inwardly tapering and preferably conical opening orpassage p whose discharge end is disposed at an obtuse angle to the axisof the cone so that as shown by the arrows in Fig. 3, the air currentsare directed more or less downwardly into the fuel. This downwarddirection is furthermore enhanced and insured by the base of theoverhanging nose'rz/ which latter subserves the additional purpose ofpreventing the fuel from banking up against the openings p and chokingthem up. By reason of this feature a spaces is left between the fuel Fand the end of the nipple into which the air from the passages p may bedirected and discharged. Whatever fuel may rest on top of the nippleswill eventually slip down and off the overhanging portion `or nose 11.as clear-ly obvious from the drawings. The tapering character of thepassage p of course insures a more or less forcible jet of air, havingcorresponding penetrating powers, so that the number of these nipplesmay be lreduced beyond what would be required were the nipples providedwith passages of uniform bore.

Having described my invention, what I claim is:

l. A fire-box wall having a series of nipples projecting beyond thesurface of the wall, and jointly perforated therewith, and a formationon the nipple penetrating the fuel and overhanging the discharge end ofthe perforation.

2. A lire-box wall having a series of nipples projecting beyond theinner surface thereof, and jointly perforated by a passage taperingtoward the fire-box, and a formation on the nipple penetrating the fueland overhanging the discharge end of the perforation. i

3. A {ire-box wall having a series of conical nipples projecting beyondthe inner surface thereof and jointly perforated with said wall by aconical passage tapering toward the fire-box, and a formation on thenipple penetrating the fuel and overhanging the discharge end of thepassage.

4. A fire-box wall having a series of conical nipples dis` tributed onthe face toward the fire-box, and with said wall jointlyV perforated bya conical passage converging toward the fire-box, the discharge end ofsaid passage being disposed in a plane making an obtuse angle with theaxis of the cone whereby the air currents are directed downwardly, andan overhanging portion penetrating the fuel formed with the nipple andhaving a bottom wall adapted to insure the deflection of the aircurrents down- Ward into the fuel.

5. In a firebox wall an air conducting nipple of conical contour formedon the Wall, and provided with a passage tapering toward the apex of thecone and truncated in a plane making an obtuse angle with the axis ofthe cone, and a formation on the cone projecting beyond or overhangingthe discharge end of the passage and penetrating the fuel. i

In testimony whereof I aflx my signature, in presence of two witnesses.

GEORGE F. NOLTE.

Witnesses:

H. H. FRIDLEY, JOHN L. HOPKINS.

